The happy family was decked out in their Disney finest with Duff, 26, wearing a pair of Minnie Mouse ears with her CJ Free jewelry and her tiny tot rocking a custom-embroidered mouse ears hat and Mickey Mouse shirt.

"We braved Disneyland yesterday! Luca's 1st time," Duff tweeted on Dec. 28, followed by a picture of Luca's hat with his name stitched in yellow.